Exhibit 16.4 Malone & Bailey, PLLC 5444 Westheimer Rd., Suite 2080 Houston TX 77056 22 October 2001 To the Board of Directors APO Health, Inc. We have read and agree with the comments in Item 4 of Form 8-K of APO Health, Inc. dated October 22, 2001. / s/ Malone & Bailey Malone & Bailey, PLLC Houston, Texas